PMID- 30773551 OWN - NLM STAT- MEDLINE DCOM- 20190514 LR - 20210528 IS - 1671-167X (Print) IS - 1671-167X (Linking) VI - 51 IP - 1 DP - 2019 Feb 18 TI - [Analysis of edge morphology of partial veneers made by different processing techniques and materials]. PG - 93-99 LID - 10.19723/j.issn.1671-167X.2019.01.017 [doi] AB - OBJECTIVE: To compare the edge morphology of partial veneers made of different materials by slurry molding, heat-pressed and computer aided design/computer aided manufacturing (CAD/CAM) techniques. METHODS: Thirty premolars with smooth surface and intact enamel were selected and randomly divided into five groups, 6 specimens for each group. Group A were made from feldspathic porcelain (Noritake(R)) by slurry molding, while Group B were made from lithium disilicate glass ceramic (IPS E.max(R) Press) by heat-pressed. Group C/D/E were respectively made from feldspar porcelain block (VITA Mark II(R)), zirconia-reinforced glass ceramic (VITA Suprinity(R)) and hybrid ceramic with a ceramic-polymer network (VITA Enamic(R)) by CAD/CAM techniques. All the partial veneers luted with light-cured composite resin. Then the partial veneers were trimmed and polished to achieve the smooth finishing margin, clinical polishing sets were used according to the product descriptions. Scanning electron microscope (SEM) was used to observe the edge morphology of prostheses and the exposure of resin cements. RESULTS: The smooth surface and knife-like edge of the partial veneers could be obtained after bonding, trimming and polishing. The edges of Group A were slightly rough and the width of the exposed adhesive was (106.00+/-9.17) mum. In Group B, the edges were smoother than Group A, and the exposed wide adhesive strip was visible, which was (138.33+/-20.59) mum. In Group E, the edges were smooth too, and the width of exposed adhesive strip was (186.00+/-5.66) mum. The edges of Group C and Group D were rough and uneven, and the adhesive was rarely exposed, they were (50.67+/-7.51) mum and (65.67+/-17.90) mum. There were all significant differences between two groups, except Group C and Group D. CONCLUSION: After trimming and polishing in accordance with clinical procedures, the expected knife-like edge can be obtained in all groups. The width of the exposed resin adhesive of each group is different, the order: Mark II/Suprinity < Noritake < E.max Press < Enamic. The edge morphology of partial veneers in different processing technic and materials are different. FAU - Wang, R J AU - Wang RJ AD - Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China. FAU - Liu, M AU - Liu M AD - Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China. FAU - Song, D Y AU - Song DY AD - Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China. FAU - Yang, S AU - Yang S AD - Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China. FAU - Wang, Q AU - Wang Q AD - Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China. FAU - Wang, L AU - Wang L AD - Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China. FAU - Feng, H L AU - Feng HL AD - Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China. LA - chi PT - Journal Article PL - China TA - Beijing Da Xue Xue Bao Yi Xue Ban JT - Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences JID - 101125284 RN - 0 (Composite Resins) RN - 12001-21-7 (Dental Porcelain) SB - IM MH - *Ceramics MH - Composite Resins MH - Computer-Aided Design MH - *Dental Porcelain MH - Materials Testing MH - Surface Properties PMC - PMC7433542 COIS- The authors have declared that no competing interests exist. 作者已声明无竞争性利益关系。 EDAT- 2019/02/19 06:00 MHDA- 2019/05/15 06:00 PMCR- 2019/02/18 CRDT- 2019/02/19 06:00 PHST- 2019/02/19 06:00 [entrez] PHST- 2019/02/19 06:00 [pubmed] PHST- 2019/05/15 06:00 [medline] PHST- 2019/02/18 00:00 [pmc-release] AID - bjdxxbyxb-51-1-93 [pii] AID - 10.19723/j.issn.1671-167X.2019.01.017 [doi] PST - ppublish SO - Beijing Da Xue Xue Bao Yi Xue Ban. 2019 Feb 18;51(1):93-99. doi: 10.19723/j.issn.1671-167X.2019.01.017.